<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
  <head>

    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <meta content="Cask Data, Inc." name="author" />
<meta content="Frequently Asked Questions about the Cask Data Application Platform" name="description" />
<meta content="Copyright © 2014-2017 Cask Data, Inc." name="copyright" />


    <meta name="git_release" content="6.1.1">
    <meta name="git_hash" content="05fbac36f9f7aadeb44f5728cea35136dbc243e5">
    <meta name="git_timestamp" content="2020-02-09 08:22:47 +0800">
    <title>常见问题: General Questions</title>

    <link rel="stylesheet" href="_static/cdap-bootstrap.css" type="text/css" />
    <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
    <link rel="stylesheet" href="_static/bootstrap-3.3.6/css/bootstrap.min.css" type="text/css" />
    <link rel="stylesheet" href="_static/bootstrap-3.3.6/css/bootstrap-theme.min.css" type="text/css" />
    <link rel="stylesheet" href="_static/css/bootstrap-sphinx.css" type="text/css" />
    <link rel="stylesheet" href="_static/css/cdap-dynamicscrollspy-4.css" type="text/css" />
    <link rel="stylesheet" href="_static/css/jquery.mCustomScrollbar.css" type="text/css" />
    <link rel="stylesheet" href="_static/css/cdap-jquery.mCustomScrollbar.css" type="text/css" />
    <link rel="stylesheet" href="_static/css/abixTreeList-2.css" type="text/css" />
    <link rel="stylesheet" href="_static/cdap-bootstrap.css" type="text/css" />

    <script type="text/javascript">
      var DOCUMENTATION_OPTIONS = {
        URL_ROOT:    '',
        VERSION:     '6.1.1',
        COLLAPSE_INDEX: false,
        FILE_SUFFIX: '.html',
        HAS_SOURCE:  false
      };
    </script>
    <script type="text/javascript" src="_static/jquery.js"></script>
    <script type="text/javascript" src="_static/underscore.js"></script>
    <script type="text/javascript" src="_static/doctools.js"></script>
    <script type="text/javascript" src="_static/language_data.js"></script>

    <link rel="shortcut icon" href="_static/favicon.ico"/>
    <link rel="index" title="Index" href="genindex.html" />
    <link rel="search" title="Search" href="search.html" />
    <link rel="top" title="Cask Data Application Platform 6.1.1 Documentation" href="index.html" />
    <link rel="up" title="常见问题" href="index.html" />
    <link rel="next" title="常见问题: CDAP" href="cdap.html" />
    <link rel="prev" title="常见问题" href="index.html" />
    <!-- block extrahead -->
    <meta charset='utf-8'>
    <meta http-equiv='X-UA-Compatible' content='IE=edge,chrome=1'>
    <meta name='viewport' content='width=device-width, initial-scale=1.0, maximum-scale=1'>
    <meta name="apple-mobile-web-app-capable" content="yes">
    <!-- block extrahead end -->

</head>
<body role="document">

<!-- block navbar -->
<div id="navbar" class="navbar navbar-inverse navbar-default navbar-fixed-top">
    <div class="container-fluid">
      <div class="row">
        <div class="navbar-header">
          <!-- .btn-navbar is used as the toggle for collapsed navbar content -->
          <a class="navbar-brand" href="table-of-contents/../../index.html">
            <span><img alt="CDAP logo" src="_static/cdap_logo.svg"/></span>
          </a>

          <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".nav-collapse">
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
          </button>

          <div class="pull-right">
            <div class="dropdown version-dropdown">
              <a href="#" class="dropdown-toggle" data-toggle="dropdown"
                role="button" aria-haspopup="true" aria-expanded="false">
                v 6.1.1 <span class="caret"></span>
              </a>
              <ul class="dropdown-menu">
                <li><a href="//docs.cdap.io/cdap/5.1.2/en/index.html">v 5.1.2</a></li>
                <li><a href="//docs.cdap.io/cdap/4.3.4/en/index.html">v 4.3.4</a></li>
              </ul>
            </div>
          </div>
          <form class="navbar-form navbar-right navbar-search" action="search.html" method="get">
            <div class="form-group">
              <div class="navbar-search-image material-icons"></div>
              <input type="text" name="q" class="form-control" placeholder="  Search" />
            </div>
            <input type="hidden" name="check_keywords" value="yes" />
            <input type="hidden" name="area" value="default" />
          </form>

          <div class="collapse navbar-collapse nav-collapse navbar-right navbar-navigation">
            <ul class="nav navbar-nav"><li class="docsite-nav-tab-container"><a class="docsite-nav-tab-link " href="table-of-contents/../../index.html">简介</a></li><li class="docsite-nav-tab-container"><a class="docsite-nav-tab-link " href="table-of-contents/../../guides.html">手册</a></li><li class="docsite-nav-tab-container"><a class="docsite-nav-tab-link " href="table-of-contents/../../reference-manual/index.html">参考</a></li><li class="docsite-nav-tab-container"><a class="docsite-nav-tab-link current" href="table-of-contents/../../faqs/index.html">帮助</a></li>
            </ul>
          </div>

        </div>
      </div>
    </div>
  </div><!-- block navbar end -->
<!-- block main content -->
<div class="main-container container">
  <div class="row"><div class="col-md-2">
      <div id="sidebar" class="bs-sidenav scrollable-y-outside" role="complementary">
<!-- theme_manual: faqs -->
<!-- theme_manual_highlight: help -->
<!-- sidebar_title_link: Help -->

  <div role="note" aria-label="manuals links"><h3>Help</h3>

    <ul class="this-page-menu">
      <li class="toctree-l1"><b><a href="table-of-contents/../../faqs/index.html" rel="nofollow">常见问题</a></b>
      <nav class="pagenav">
      <ul class="current">
<li class="toctree-l1 current"><a class="reference internal" href="index.html"> Overview</a></li>
<li class="toctree-l1 current"><a class="current reference internal" href="#"> General Questions</a></li>
<li class="toctree-l1"><a class="reference internal" href="cdap.html"> CDAP</a></li>
<li class="toctree-l1"><a class="reference internal" href="cloudera-manager.html"> Cloudera Manager</a></li>
<li class="toctree-l1"><a class="reference internal" href="cdap-pipelines.html"> CDAP Pipelines</a></li>
</ul>
</nav>
      </li>
    </ul>
  </div></div>
    </div><div class="col-md-8 content" id="main-content">
    
  <div class="section" id="general-questions">
<span id="faqs-general-questions"></span><h1>常见问题: General Questions<a class="headerlink" href="#general-questions" title="Permalink to this headline">🔗</a></h1>
<div class="section" id="what-is-available-in-the-cdap-sandbox">
<h2>What is available in the CDAP Sandbox?<a class="headerlink" href="#what-is-available-in-the-cdap-sandbox" title="Permalink to this headline">🔗</a></h2>
<p>The CDAP Sandbox includes:</p>
<ul class="simple">
<li>Local instance of the CDAP Server;</li>
<li>CDAP APIs for building applications;</li>
<li>The CDAP UI and CDAP CLI for interacting with CDAP; and</li>
<li>Examples for getting started with CDAP.</li>
</ul>
</div>
<div class="section" id="what-platforms-are-supported-by-the-cdap-sandbox">
<h2>What platforms are supported by the CDAP Sandbox?<a class="headerlink" href="#what-platforms-are-supported-by-the-cdap-sandbox" title="Permalink to this headline">🔗</a></h2>
<p>The CDAP Sandbox has been extensively tested on Mac OS X and Linux. CDAP on Windows
has not been as extensively tested. If you have any issues with CDAP on Windows, help us by
<a class="reference external" href="https://issues.cask.co/browse/CDAP">filing a ticket</a>.</p>
</div>
<div class="section" id="what-programming-languages-are-supported-by-cdap">
<h2>What programming languages are supported by CDAP?<a class="headerlink" href="#what-programming-languages-are-supported-by-cdap" title="Permalink to this headline">🔗</a></h2>
<p>CDAP currently supports Java for developing applications.</p>
</div>
<div class="section" id="what-version-of-java-sdk-is-required-by-cdap">
<h2>What version of Java SDK is required by CDAP?<a class="headerlink" href="#what-version-of-java-sdk-is-required-by-cdap" title="Permalink to this headline">🔗</a></h2>
<p>The latest version of the JDK or JRE version 8 must be installed in your
environment. CDAP is tested on both the <a class="reference external" href="http://www.java.com/en/download/manual.jsp">Oracle JDK</a>
and the <a class="reference external" href="http://openjdk.java.net/">OpenJDK</a>.</p>
</div>
<div class="section" id="what-version-of-node-js-is-required-by-cdap">
<h2>What version of Node.js is required by CDAP?<a class="headerlink" href="#what-version-of-node-js-is-required-by-cdap" title="Permalink to this headline">🔗</a></h2>
<p>We recommend a version of <a class="reference external" href="https://nodejs.org/">Node.js</a> beginning with v10.16.2.</p>
</div>
<div class="section" id="i-have-a-hadoop-cluster-in-my-data-center-can-i-run-cdap-that-uses-my-hadoop-cluster">
<h2>I have a Hadoop cluster in my data center, can I run CDAP that uses my Hadoop cluster?<a class="headerlink" href="#i-have-a-hadoop-cluster-in-my-data-center-can-i-run-cdap-that-uses-my-hadoop-cluster" title="Permalink to this headline">🔗</a></h2>
<p>Yes. You can install Distributed CDAP on your Hadoop cluster. See the <a class="reference external" href="../../admin-manual/installation/index.html#installation-index" title="(in Cask Data Application Platform v6.1.1)"><span class="xref std std-ref">Installation procedure</span></a>.</p>
</div>
<div class="section" id="what-hadoop-distributions-can-cdap-run-on">
<h2>What Hadoop distributions can CDAP run on?<a class="headerlink" href="#what-hadoop-distributions-can-cdap-run-on" title="Permalink to this headline">🔗</a></h2>
<p>CDAP 6.1.1 has been tested on and supports CDH 5.1 through 5.12, HDP 2.0 through 2.6,
MapR 5.0 through 5.2, Amazon Hadoop (EMR) 4.6 through 4.8, and Apache Bigtop 1.0.</p>
</div>
<div class="section" id="i-m-seeing-log-messages-about-the-failure-to-send-audit-log-message-while-running-the-sandbox-what-s-wrong">
<h2>I’m seeing log messages about the failure to send audit log message while running the Sandbox. What’s wrong?<a class="headerlink" href="#i-m-seeing-log-messages-about-the-failure-to-send-audit-log-message-while-running-the-sandbox-what-s-wrong" title="Permalink to this headline">🔗</a></h2>
<p>If your computer goes into sleep mode, then you may see these messages after the machine
is restored from sleep mode, as the audit logs are not getting delivered while the machine
sleeps. You may need to restart CDAP to restore its state depending on how long it has
been asleep.</p>
</div>
<div class="section" id="i-ve-found-a-bug-in-cdap-how-do-i-file-an-issue">
<span id="faq-cdap-user-groups"></span><h2>I’ve found a bug in CDAP. How do I file an issue?<a class="headerlink" href="#i-ve-found-a-bug-in-cdap-how-do-i-file-an-issue" title="Permalink to this headline">🔗</a></h2>
<p>You can use the <a class="reference external" href="https://groups.google.com/d/forum/cdap-user">CDAP User GoogleGroup</a> to
report issues or file a ticket using the available <a class="reference external" href="https://issues.cask.co/browse/CDAP">CDAP JIRA system</a>.</p>
</div>
<div class="section" id="what-user-groups-and-mailing-lists-are-available-about-cdap">
<h2>What User Groups and Mailing Lists are available about CDAP?<a class="headerlink" href="#what-user-groups-and-mailing-lists-are-available-about-cdap" title="Permalink to this headline">🔗</a></h2>
<ul class="simple">
<li><a class="reference external" href="https://groups.google.com/d/forum/cdap-user">cdap-user&#64;googlegroups.com</a></li>
</ul>
<p>The <em>cdap-user</em> mailing list is primarily for users using the product to develop
applications. You can expect questions from users, release announcements, and any other
discussions that we think will be helpful to the users.</p>
<ul class="simple">
<li><a class="reference external" href="https://groups.google.com/d/forum/cdap-dev">cdap-dev&#64;googlegroups.com</a></li>
</ul>
<p>The <em>cdap-dev</em> mailing list is essentially for developers actively working
on the product, and should be used for all our design, architecture and technical
discussions moving forward. This mailing list will also receive all JIRA and GitHub
notifications.</p>
</div>
<div class="section" id="is-cdap-on-irc">
<h2>Is CDAP on IRC?<a class="headerlink" href="#is-cdap-on-irc" title="Permalink to this headline">🔗</a></h2>
<p><strong>CDAP IRC Channel:</strong> #cdap on <a class="reference external" href="irc://chat.freenode.net:6667/cdap">chat.freenode.net</a>.</p>
</div>
</div>

</div>
    <div class="col-md-2">
      <div id="right-sidebar" class="bs-sidenav scrollable-y" role="complementary">
        <div id="localtoc-scrollspy">
        </div>
      </div>
    </div></div>
</div>
<!-- block main content end -->
<!-- block footer -->
<footer class="footer">
      <div class="container">
        <div class="row">
          <div class="col-md-2 footer-left"><a title="常见问题" href="index.html" />Previous</a></div>
          <div class="col-md-8 footer-center"><a class="footer-tab-link" href="table-of-contents/../../reference-manual/licenses/index.html">Copyright</a> &copy; 2014-2020 Cask Data, Inc.&bull; <a class="footer-tab-link" href="//docs.cask.co/cdap/6.1.1/cdap-docs-6.1.1-web.zip" rel="nofollow">Download</a> an archive or
<a class="footer-tab-link" href="//docs.cask.co/cdap">switch the version</a> of the documentation
          </div>
          <div class="col-md-2 footer-right"><a title="常见问题: CDAP" href="cdap.html" />Next</a></div>
        </div>
      </div>
    </footer>
<!-- block footer end -->
<script type="text/javascript" src="_static/bootstrap-3.3.6/js/bootstrap.min.js"></script><script type="text/javascript" src="_static/js/bootstrap-sphinx.js"></script><script type="text/javascript" src="_static/js/abixTreeList-2.js"></script><script type="text/javascript" src="_static/js/cdap-dynamicscrollspy-4.js"></script><script type="text/javascript" src="_static/js/cdap-version-menu.js"></script><script type="text/javascript" src="_static/js/copy-to-clipboard.js"></script><script type="text/javascript" src="_static/js/jquery.mousewheel.min.js"></script><script type="text/javascript" src="_static/js/jquery.mCustomScrollbar.js"></script><script type="text/javascript" src="_static/js/js.cookie.js"></script><script type="text/javascript" src="_static/js/tabbed-parsed-literal-0.2.js"></script><script type="text/javascript" src="_static/js/cdap-onload-javascript.js"></script><script type="text/javascript" src="_static/js/cdap-version-menu.js"></script>
    <script src="https://cdap.gitee.io/docs/cdap/json-versions.js"/></script>
  </body>
</html>